diff options
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/Makefile | 3 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e.h | 7 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_configfs.c | 354 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_main.c | 13 |
4 files changed, 369 insertions, 8 deletions
diff --git a/drivers/net/ethernet/intel/i40e/Makefile b/drivers/net/ethernet/intel/i40e/Makefile index c40581999121..023e452aff8c 100644 --- a/drivers/net/ethernet/intel/i40e/Makefile +++ b/drivers/net/ethernet/intel/i40e/Makefile @@ -1,7 +1,7 @@ ################################################################################ # # Intel Ethernet Controller XL710 Family Linux Driver -# Copyright(c) 2013 - 2014 Intel Corporation. +# Copyright(c) 2013 - 2015 Intel Corporation. # # This program is free software; you can redistribute it and/or modify it # under the terms and conditions of the GNU General Public License, @@ -37,6 +37,7 @@ i40e-objs := i40e_main.o \ i40e_hmc.o \ i40e_lan_hmc.o \ i40e_nvm.o \ + i40e_configfs.o \ i40e_debugfs.o \ i40e_diag.o \ i40e_txrx.o \ diff --git a/drivers/net/ethernet/intel/i40e/i40e.h b/drivers/net/ethernet/intel/i40e/i40e.h index 713e20e6a29e..21925876a633 100644 --- a/drivers/net/ethernet/intel/i40e/i40e.h +++ b/drivers/net/ethernet/intel/i40e/i40e.h @@ -688,6 +688,7 @@ int i40e_vlan_rx_add_vid(struct net_device *netdev, int i40e_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid); #endif +int i40e_open(struct net_device *netdev); int i40e_vsi_open(struct i40e_vsi *vsi); void i40e_vlan_stripping_disable(struct i40e_vsi *vsi); int i40e_vsi_add_vlan(struct i40e_vsi *vsi, s16 vid); @@ -698,7 +699,6 @@ bool i40e_is_vsi_in_vlan(struct i40e_vsi *vsi); struct i40e_mac_filter *i40e_find_mac(struct i40e_vsi *vsi, u8 *macaddr, bool is_vf, bool is_netdev); #ifdef I40E_FCOE -int i40e_open(struct net_device *netdev); int i40e_close(struct net_device *netdev); int i40e_setup_tc(struct net_device *netdev, u8 tc); void i40e_netpoll(struct net_device *netdev); @@ -735,7 +735,10 @@ int i40e_ptp_set_ts_config(struct i40e_pf *pf, struct ifreq *ifr); int i40e_ptp_get_ts_config(struct i40e_pf *pf, struct ifreq *ifr); void i40e_ptp_init(struct i40e_pf *pf); void i40e_ptp_stop(struct i40e_pf *pf); - +#if IS_ENABLED(CONFIG_CONFIGFS_FS) +int i40e_configfs_init(void); +void i40e_configfs_exit(void); +#endif /* CONFIG_CONFIGFS_FS */ i40e_status i40e_get_npar_bw_setting(struct i40e_pf *pf); i40e_status i40e_set_npar_bw_setting(struct i40e_pf *pf); i40e_status i40e_commit_npar_bw_setting(struct i40e_pf *pf); diff --git a/drivers/net/ethernet/intel/i40e/i40e_configfs.c b/drivers/net/ethernet/intel/i40e/i40e_configfs.c new file mode 100644 index 000000000000..3af4f14559d7 --- /dev/null +++ b/drivers/net/ethernet/intel/i40e/i40e_configfs.c @@ -0,0 +1,354 @@ +/******************************************************************************* + * + * Intel Ethernet Controller XL710 Family Linux Driver + * Copyright(c) 2013 - 2015 Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along + * with this program. If not, see <http://www.gnu.org/licenses/>. + * + * The full GNU General Public License is included in this distribution in + * the file called "COPYING". + * + * Contact Information: + * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> + * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 + * + ******************************************************************************/ + +#include <linux/configfs.h> +#include "i40e.h" + +#if IS_ENABLED(CONFIG_CONFIGFS_FS) + +/** + * configfs structure for i40e + * + * This file adds code for configfs support for the i40e driver. This sets + * up a filesystem under /sys/kernel/config in which configuration changes + * can be made for the driver's netdevs. + * + * The initialization in this code creates the "i40e" entry in the configfs + * system. After that, the user needs to use mkdir to create configurations + * for specific netdev ports; for example "mkdir eth3". This code will verify + * that such a netdev exists and that it is owned by i40e. + * + **/ + +struct i40e_cfgfs_vsi { + struct config_item item; + struct i40e_vsi *vsi; +}; + +static inline struct i40e_cfgfs_vsi *to_i40e_cfgfs_vsi(struct config_item *item) +{ + return item ? container_of(item, struct i40e_cfgfs_vsi, item) : NULL; +} + +static struct configfs_attribute i40e_cfgfs_vsi_attr_min_bw = { + .ca_owner = THIS_MODULE, + .ca_name = "min_bw", + .ca_mode = S_IRUGO | S_IWUSR, +}; + +static struct configfs_attribute i40e_cfgfs_vsi_attr_max_bw = { + .ca_owner = THIS_MODULE, + .ca_name = "max_bw", + .ca_mode = S_IRUGO | S_IWUSR, +}; + +static struct configfs_attribute i40e_cfgfs_vsi_attr_commit = { + .ca_owner = THIS_MODULE, + .ca_name = "commit", + .ca_mode = S_IRUGO | S_IWUSR, +}; + +static struct configfs_attribute i40e_cfgfs_vsi_attr_port_count = { + .ca_owner = THIS_MODULE, + .ca_name = "ports", + .ca_mode = S_IRUGO | S_IWUSR, +}; + +static struct configfs_attribute i40e_cfgfs_vsi_attr_part_count = { + .ca_owner = THIS_MODULE, + .ca_name = "partitions", + .ca_mode = S_IRUGO | S_IWUSR, +}; + +static struct configfs_attribute *i40e_cfgfs_vsi_attrs[] = { + &i40e_cfgfs_vsi_attr_min_bw, + &i40e_cfgfs_vsi_attr_max_bw, + &i40e_cfgfs_vsi_attr_commit, + &i40e_cfgfs_vsi_attr_port_count, + &i40e_cfgfs_vsi_attr_part_count, + NULL, +}; + +/** + * i40e_cfgfs_vsi_attr_show - Show a VSI's NPAR BW partition info + * @item: A pointer back to the configfs item created on driver load + * @attr: A pointer to this item's configuration attribute + * @page: A pointer to the output buffer + **/ +static ssize_t i40e_cfgfs_vsi_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + struct i40e_cfgfs_vsi *i40e_cfgfs_vsi = to_i40e_cfgfs_vsi(item); + struct i40e_pf *pf = i40e_cfgfs_vsi->vsi->back; + ssize_t count; + + if (i40e_cfgfs_vsi->vsi != pf->vsi[pf->lan_vsi]) + return 0; + + if (strncmp(attr->ca_name, "min_bw", 6) == 0) + count = sprintf(page, "%s %s %d%%\n", + i40e_cfgfs_vsi->vsi->netdev->name, + (pf->npar_min_bw & I40E_ALT_BW_RELATIVE_MASK) ? + "Relative Min BW" : "Absolute Min BW", + pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK); + else if (strncmp(attr->ca_name, "max_bw", 6) == 0) + count = sprintf(page, "%s %s %d%%\n", + i40e_cfgfs_vsi->vsi->netdev->name, + (pf->npar_max_bw & I40E_ALT_BW_RELATIVE_MASK) ? + "Relative Max BW" : "Absolute Max BW", + pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK); + else if (strncmp(attr->ca_name, "ports", 5) == 0) + count = sprintf(page, "%d\n", + pf->hw.num_ports); + else if (strncmp(attr->ca_name, "partitions", 10) == 0) + count = sprintf(page, "%d\n", + pf->hw.num_partitions); + else + return 0; + + return count; +} + +/** + * i40e_cfgfs_vsi_attr_store - Show a VSI's NPAR BW partition info + * @item: A pointer back to the configfs item created on driver load + * @attr: A pointer to this item's configuration attribute + * @page: A pointer to the user input buffer holding the user input values + **/ +static ssize_t i40e_cfgfs_vsi_attr_store(struct config_item *item, + struct configfs_attribute *attr, + const char *page, size_t count) +{ + struct i40e_cfgfs_vsi *i40e_cfgfs_vsi = to_i40e_cfgfs_vsi(item); + struct i40e_pf *pf = i40e_cfgfs_vsi->vsi->back; + char *p = (char *)page; + int rc; + unsigned long tmp; + + if (i40e_cfgfs_vsi->vsi != pf->vsi[pf->lan_vsi]) + return 0; + + if (!p || (*p && (*p == '\n'))) + return -EINVAL; + + rc = kstrtoul(p, 10, &tmp); + if (rc) + return rc; + if (tmp > 100) + return -ERANGE; + + if (strncmp(attr->ca_name, "min_bw", 6) == 0) { + if (tmp > (pf->npar_max_bw & I40E_ALT_BW_VALUE_MASK)) + return -ERANGE; + /* Preserve the valid and relative BW bits - the rest is + * don't care. + */ + pf->npar_min_bw &= (I40E_ALT_BW_RELATIVE_MASK | + I40E_ALT_BW_VALID_MASK); + pf->npar_min_bw |= (tmp & I40E_ALT_BW_VALUE_MASK); + i40e_set_npar_bw_setting(pf); + } else if (strncmp(attr->ca_name, "max_bw", 6) == 0) { + if (tmp < 1 || + tmp < (pf->npar_min_bw & I40E_ALT_BW_VALUE_MASK)) + return -ERANGE; + /* Preserve the valid and relative BW bits - the rest is + * don't care. + */ + pf->npar_max_bw &= (I40E_ALT_BW_RELATIVE_MASK | + I40E_ALT_BW_VALID_MASK); + pf->npar_max_bw |= (tmp & I40E_ALT_BW_VALUE_MASK); + i40e_set_npar_bw_setting(pf); + } else if (strncmp(attr->ca_name, "commit", 6) == 0 && tmp == 1) { + if (i40e_commit_npar_bw_setting(pf)) + return -EIO; + } + + return count; +} + +/** + * i40e_cfgfs_vsi_release - Free up the configuration item memory + * @item: A pointer back to the configfs item created on driver load + **/ +static void i40e_cfgfs_vsi_release(struct config_item *item) +{ + kfree(to_i40e_cfgfs_vsi(item)); +} + +static struct configfs_item_operations i40e_cfgfs_vsi_item_ops = { + .release = i40e_cfgfs_vsi_release, + .show_attribute = i40e_cfgfs_vsi_attr_show, + .store_attribute = i40e_cfgfs_vsi_attr_store, +}; + +static struct config_item_type i40e_cfgfs_vsi_type = { + .ct_item_ops = &i40e_cfgfs_vsi_item_ops, + .ct_attrs = i40e_cfgfs_vsi_attrs, + .ct_owner = THIS_MODULE, +}; + +struct i40e_cfgfs_group { + struct config_group group; +}; + +/** + * to_i40e_cfgfs_group - Get the group pointer from the config item + * @item: A pointer back to the configfs item created on driver load + **/ +static inline struct i40e_cfgfs_group * +to_i40e_cfgfs_group(struct config_item *item) +{ + return item ? container_of(to_config_group(item), + struct i40e_cfgfs_group, group) : NULL; +} + +/** + * i40e_cfgfs_group_make_item - Create the configfs item with group container + * @group: A pointer to our configfs group + * @name: A pointer to the nume of the device we're looking for + **/ +static struct config_item * +i40e_cfgfs_group_make_item(struct config_group *group, const char *name) +{ + struct i40e_cfgfs_vsi *i40e_cfgfs_vsi; + struct net_device *netdev; + struct i40e_netdev_priv *np; + + read_lock(&dev_base_lock); + netdev = first_net_device(&init_net); + while (netdev) { + if (strncmp(netdev->name, name, sizeof(netdev->name)) == 0) + break; + netdev = next_net_device(netdev); + } + read_unlock(&dev_base_lock); + + if (!netdev) + return ERR_PTR(-ENODEV); + + /* is this netdev owned by i40e? */ + if (netdev->netdev_ops->ndo_open != i40e_open) + return ERR_PTR(-EACCES); + + i40e_cfgfs_vsi = kzalloc(sizeof(*i40e_cfgfs_vsi), GFP_KERNEL); + if (!i40e_cfgfs_vsi) + return ERR_PTR(-ENOMEM); + + np = netdev_priv(netdev); + i40e_cfgfs_vsi->vsi = np->vsi; + config_item_init_type_name(&i40e_cfgfs_vsi->item, name, + &i40e_cfgfs_vsi_type); + + return &i40e_cfgfs_vsi->item; +} + +static struct configfs_attribute i40e_cfgfs_group_attr_description = { + .ca_owner = THIS_MODULE, + .ca_name = "description", + .ca_mode = S_IRUGO, +}; + +static struct configfs_attribute *i40e_cfgfs_group_attrs[] = { + &i40e_cfgfs_group_attr_description, + NULL, +}; + +static ssize_t i40e_cfgfs_group_attr_show(struct config_item *item, + struct configfs_attribute *attr, + char *page) +{ + return sprintf(page, +"i40e\n" +"\n" +"This subsystem allows the modification of network port configurations.\n" +"To start, use the name of the network port to be configured in a 'mkdir'\n" +"command, e.g. 'mkdir eth3'.\n"); +} + +static void i40e_cfgfs_group_release(struct config_item *item) +{ + kfree(to_i40e_cfgfs_group(item)); +} + +static struct configfs_item_operations i40e_cfgfs_group_item_ops = { + .release = i40e_cfgfs_group_release, + .show_attribute = i40e_cfgfs_group_attr_show, +}; + +/* Note that, since no extra work is required on ->drop_item(), + * no ->drop_item() is provided. + */ +static struct configfs_group_operations i40e_cfgfs_group_ops = { + .make_item = i40e_cfgfs_group_make_item, +}; + +static struct config_item_type i40e_cfgfs_group_type = { + .ct_item_ops = &i40e_cfgfs_group_item_ops, + .ct_group_ops = &i40e_cfgfs_group_ops, + .ct_attrs = i40e_cfgfs_group_attrs, + .ct_owner = THIS_MODULE, +}; + +static struct configfs_subsystem i40e_cfgfs_group_subsys = { + .su_group = { + .cg_item = { + .ci_namebuf = "i40e", + .ci_type = &i40e_cfgfs_group_type, + }, + }, +}; + +/** + * i40e_configfs_init - Initialize configfs support for our driver + **/ +int i40e_configfs_init(void) +{ + int ret; + struct configfs_subsystem *subsys; + + subsys = &i40e_cfgfs_group_subsys; + + config_group_init(&subsys->su_group); + mutex_init(&subsys->su_mutex); + ret = configfs_register_subsystem(subsys); + if (ret) { + pr_err("Error %d while registering configfs subsystem %s\n", + ret, subsys->su_group.cg_item.ci_namebuf); + return ret; + } + + return 0; +} + +/** + * i40e_configfs_init - Bail out - unregister configfs subsystem and release + **/ +void i40e_configfs_exit(void) +{ + configfs_unregister_subsystem(&i40e_cfgfs_group_subsys); +} +#endif /* IS_ENABLED(CONFIG_CONFIGFS_FS) */ diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c index e3e48c3ae24a..eb2655f464b3 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -4835,11 +4835,7 @@ exit: * * Returns 0 on success, negative value on failure **/ -#ifdef I40E_FCOE int i40e_open(struct net_device *netdev) -#else -static int i40e_open(struct net_device *netdev) -#endif { struct i40e_netdev_priv *np = netdev_priv(netdev); struct i40e_vsi *vsi = np->vsi; @@ -7741,7 +7737,7 @@ static int i40e_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], return err; } -static const struct net_device_ops i40e_netdev_ops = { +const struct net_device_ops i40e_netdev_ops = { .ndo_open = i40e_open, .ndo_stop = i40e_close, .ndo_start_xmit = i40e_lan_xmit_frame, @@ -9943,6 +9939,10 @@ static int __init i40e_init_module(void) pr_info("%s: %s - version %s\n", i40e_driver_name, i40e_driver_string, i40e_driver_version_str); pr_info("%s: %s\n", i40e_driver_name, i40e_copyright); + +#if IS_ENABLED(CONFIG_CONFIGFS_FS) + i40e_configfs_init(); +#endif /* CONFIG_CONFIGFS_FS */ i40e_dbg_init(); return pci_register_driver(&i40e_driver); } @@ -9958,5 +9958,8 @@ static void __exit i40e_exit_module(void) { pci_unregister_driver(&i40e_driver); i40e_dbg_exit(); +#if IS_ENABLED(CONFIG_CONFIGFS_FS) + i40e_configfs_exit(); +#endif /* CONFIG_CONFIGFS_FS */ } module_exit(i40e_exit_module); |